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#1
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"tony" wrote in message
... If you're current, if the forecast at your destination is well above your personal minimums, if you have a solid gold alternate, no imbedded thunderstorms, no icing, no unusual turbulence reported, why whouldn't you go? IFR in those conditions is a lot easier IMO than VFR. IMHO, the go/no-go decision is being made constantly, not just before takeoff. I agree with those who say that the instrument rating makes the decision-making more complicated. I don't see this as necessarily a bad thing, but it is the price of the increased utility. Basically, when flying IFR there are more potential ways to run into flight hazards you can't see or predict than when VFR, at least in a typically-equipped four-seater piston airplane that most of us are flying. Forecast above minimums? Great...forecasts can be wrong and you won't find out until you get there and try to fly the approach. "Solid gold alternate"? What's that? In flying, there are no guarantees. No imbedded thunderstorms? Well, I guess if you have radar and/or a lightning detector, you could know this. Most of us don't. No icing? Impossible to know for sure until you fly through. No unusual turbulence reported? Past performance is no guarantee of future returns and when flying IMC, you have fewer clues to hint at the possibility, since you can't see visual signs of wind conditions. When flying day VFR, you can see outside the airplane and avoid most weather conditions that would be a problem. Not all people do, of course, and you still have wind to deal with. But even with wind, for the observant pilot there are plenty of clues. Night VFR is harder, but with conservative decision-making and proper planning, you can avoid flying into clouds, and you can visually avoid the rest of the stuff that might cause a problem. When flying IFR, real IFR that is, you are consistently in situations in which it's impossible to know for sure what hazards are present until you personally are in the area of the potential hazard. With extremely conservative decision making it's possible to avoid these issues, but then the utility of IFR rating becomes only slightly better than the VFR rating. Hardly worth the effort. Some real work needs to be put into the decision making to ensure you avoid these problems while still getting the usefulness of the instrument rating it offers. Bottom line: for VFR go/no-go the decision matrix is much simpler than that found for IFR flights. To me, a more complicated decision matrix means more complicated decision making. Pete |
#2
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![]() IFR in those conditions is a lot easier IMO than VFR. IMHO, the go/no-go decision is being made constantly, not just before takeoff. Of course -- most often the night before in my case, based on weather expectations. I agree with those who say that the instrument rating makes the decision-making more complicated. I don't see this as necessarily a bad thing, but it is the price of the increased utility. Basically, when flying IFR there are more potential ways to run into flight hazards you can't see or predict than when VFR, at least in a typically-equipped four-seater piston airplane that most of us are flying. I fly an Mooney 201 that I keep in top condition, Even so I've had some in flight failures -- vacuum pump in one case, alternator in the other, in actual IMC conditions. Training has everything to do with handling such events, they were hardly emergencies. As an aside, I like to keep my ADF tuned to a strong station in the direction I'm flying, that works as a backup to the DG. Forecast above minimums? Great...forecasts can be wrong and you won't find out until you get there and try to fly the approach. Oh come on. If the weather is slow moving and the forecast is for 1000 feet ceiling 4 hours from now and there's an ILS with 200 feet minimums, you're going to cancel the flight? Solid gold alternate" What's that? Yeah -- my bird has 6 comfortable hours of endurance -- 8 if I go high and lean. If my destination is 2..5 hours west, and my home base is in good weather and it's expected to stay that way for the next half day, that's pretty golden. BTW, if conditons are changing faster than expected, well that's what flight service is for, you should know that and change your plans as needed. I had unplanned RONs more than once on multiday cross countries because a weather system brewed up some unforecasted nasties a couple of hours into a 5 hour flight. What's that? In flying, there are no guarantees. No imbedded thunderstorms? Well, I guess if you have radar and/or a lightning detector, you could know this. Most of us don't. No icing? Impossible to know for sure until you fly through. I tend to depend on knowing where the freezing level is and pilot reports. Mooneys don't carry ice all that well. I have no problems with prudent pilots deciding the conditions are not to their liking and staying on the ground. I consider myself prudent, but probably fly in conditons you'd choose not to, and that's OK for both of us. I happen to like hard IFR, love the feeling of looking up at minimums and seeing the runway a half mile in front of me -- that's the happy surprise -- almost as much as I like looking up and seeing nothing but black or grey -- that's what I expect whenever I fly an approach, that way I know what the missed approach is going to be and expect to fly it. I will admit if the engine quits I'd rather be in VFR at 11,500 feet, but that is a gamble I do take. I do everything I know how to to avoid that kind of failure, and that's the single biggest worry about flying in hard IFR I have. Having said all of that, I can tell you, even flying to advance my business as I do, I probably about 5% of my flights after I get to the airport. (Equipment problems, WX is worse than expected -- never leave if I can't get back in) Would you agree, different strokes? |
#3
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"tony" wrote in message
... IMHO, the go/no-go decision is being made constantly, not just before takeoff. Of course -- most often the night before in my case, based on weather expectations. That's not what I meant. The go/no-go decision is constantly reevaluated even after takeoff, all the way to landing. [...] Would you agree, different strokes? Honestly, I have no idea what most of your post was trying to say. I didn't say anything about engine or equipment failures at all, yet you seemed to think that was an important point in your response. As far as the forecast goes, you say "I consider myself prudent, but probably fly in conditons you'd choose not to, and that's OK for both of us", which clearly misses my point. The more challenging the weather you choose to fly in, the MORE difficult the decision making becomes. You seem to be claiming it makes it easier, which is mind-boggling to me. I have no idea how, given what you wrote in your post, how you come to the conclusion that IFR decision making is easier than VFR. Pete |
#4
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![]() I have no idea how, given what you wrote in your post, how you come to the conclusion that IFR decision making is easier than VFR. The difficulty of a go/no-go decision rests on a balance between pilot/plane capabilities, and weather conditions. An experienced IFR pilot in a capable plane will have a real easy time making a decision about flying in VFR, whereas a newly minted pilot in a tomahawk might still be squirrely about some conditions, though he may still choose to go. However, the experienced IFR pilot can also find conditions which will squirrel him out. It's not VFR vs IFR. It's "how close are these conditions to the ones you and the plane are capable of", both in terms of handling the conditions themselves, and the available outs. Jose -- (for Email, make the obvious changes in my address) |
#5
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On Sun, 2 May 2004 08:09:08 -0700, "Peter Duniho"
wrote: "tony" wrote in message ... If you're current, if the forecast at your destination is well above your personal minimums, if you have a solid gold alternate, no imbedded thunderstorms, no icing, no unusual turbulence reported, why whouldn't you go? IFR in those conditions is a lot easier IMO than VFR. IMHO, the go/no-go decision is being made constantly, not just before takeoff. I agree with those who say that the instrument rating makes the decision-making more complicated. I don't see this as necessarily a bad I would not say it's more complicated although there are more things to consider. OTOH there really is only three things to consider, in both VFR and IFR. The airplanes capabilities, your capabilities, and minimums. You set your minimums and THEN check (and don't cheat or reset any minimums just because conditions are only a little worse) Ice? Go/no go Thunderstorms? Go/no go Turbulence? go/no go Wind? Go/no go Visibility? VFR the whole route Go/no go. IFR Origin, destination, and alternate if applicable Go/no go My rule: Origin, route, and destination =my minimums Alternate MUST be VFR AND there must be good VFR well within the range of the aircraft plus reserves. VFR, I'm quite willing to depart in marginal IF actual VFR (good VFR) is near and I will head for a destination that is IMC IF it is scheduled to be VMC before I get there AND there is good VMC nearby. So, for me, to fly VFR in these conditions I have more to do to keep track of the weather. Some times a lot more. OTOH I usually have the option of filing if things look like they are deteriorating, or changing faster than expected. Normally I'd file in the first place as I find it easier in those circumstances. Currently that is not an option until I get back out, do some practice and take a competency check. We've been having weather that can make a competency check into a real IFR flight for most of its duration too. :-)) Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
#6
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"Roger Halstead" wrote in message
... I would not say it's more complicated although there are more things to consider. IMHO that's exactly why it's more complicated. "More things to consider" directly translates into "more complicated". Maybe other people have a different definition of "complicated", but for me, the conclusion comes directly from my own definition of "complicated". Having more things to consider, by definition, means that the decision making is more complicated. Pete |
#7
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![]() I would not say it's more complicated although there are more things to consider. IMHO that's exactly why it's more complicated. "More things to consider" directly translates into "more complicated". Maybe other people have a different definition of "complicated", but for me, the conclusion comes directly from my own definition of "complicated". Having more things to consider, by definition, means that the decision making is more complicated. Pete I suppose one could look at it that way. The problem I had for the 200 hours I was not rated for IFR was trying to guess weather the weather guessers were right when they promised 3000 feet and 5 miles for the next couple of days before I'd start out on a weekend trip. The 'window of opportunity' for making a flight has been much wider the 3300 hours I've logged since then. FWIF, I log about 150 hours a year, and a buddy and I do an hour's profiencey check every two or three months to each other (those are brutal: "It's your airplane" we tell each other after doing everything we can to screw up the other's inner ear while wearing a hood, he pilot has his head down.) That may be the difference between my attitude and some others: I get to fly a high performance airplane, a Mooney 201, that I know very well, and I do it fairly often. It (and my bladder) has long legs: I usually file 5.5 hours of fuel on board and 150 kts. My log book shows about 20% of my flight time is actual IMC, and that's probably typical for someone who flys 80% of his time on business and is based on the east coast. It also probably means my definition of 'complicated' may be different than yours. I usually have a reasonable sense of weather conditions for the eastern third of the country where I do most of my flying. I'll have gotten a weather briefing the night before a planned trip, and another before I file: life gets complicated for me if the initial weather forecast is better than my personal equirements and the later one shows the system is getting more intense than initially forecast. I'm lucky in that I get to fly quite a lot -- most of it paid for by my company. I remember having to fly actual missed approaches only 5 times because conditions dropped below my personal minimums, so I may be more conservative than my contributions to this thread suggest. |
#8
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On Sun, 2 May 2004 22:48:52 -0700, "Peter Duniho"
wrote: "Roger Halstead" wrote in message .. . I would not say it's more complicated although there are more things to consider. IMHO that's exactly why it's more complicated. "More things to consider" directly translates into "more complicated". To me that's why the "decision is more simple. Maybe other people have a different definition of "complicated", but for me, the conclusion comes directly from my own definition of "complicated". Having more things to consider, by definition, means that the decision making is more complicated. To me making a decision on 6 clear cut definitions is much more simple than on 3 or 4 that tend to get into gray areas (although they shouldn't) Each to me are strictly go/no go decisions. The question was on making the go/no go decision. Pete Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
#9
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"Roger Halstead" wrote in message
... [...] To me making a decision on 6 clear cut definitions is much more simple than on 3 or 4 that tend to get into gray areas (although they shouldn't) I'm not familiar with the "6 clear cut definitions" of which you speak. When I make go/no-go decisions, whether for IFR or VFR, there are always gray areas. The only time the decision making is trivial is when the weather is perfectly beautiful, or when the weather is absolutely horrendous. There's a lot of room in between for IFR and VFR flight both. Pete |
#10
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![]() In article , Roger Halstead wrote: I agree with those who say that the instrument rating makes the decision-making more complicated. I don't see this as necessarily a bad I would not say it's more complicated although there are more things to consider. That's a definition of complexity. I deal with complexity in my day job (software) and have some (mostly stolen) insights about software complexity and how to manage it. None of it applies to aviation, but I can recognize complexity when I see it at least 2 out of 3 times. :-) As far as the decision-making goes, you need to compare apples to apples. ISTR being saturated just holding the airplane straight and level. Eventually, you develop the subroutines to fly the plane without getting saturated. Add talking on the radio. Throw in a couple of extra controls (gear lever, prop, cowl flaps), and it's like starting over. Roy Smith once posted that he knew he had his instrument rating nailed when he was able to discuss baseball scores with his instructor while shooting an ILS (not to debate the merits of a sterile cockpit at that phase of flight). Not because the ILS becomes less demanding, but because you develop the subroutines to deal with it more effectively. IOW, when you fly, there's a point at which you get saturated. With training and experience you learn to push back that saturation point (and perhaps how to shed load as you approach it). Just because you've developed the experience to manage the added complexity of the decision-making, doesn't mean it isn't inherently more complex than VFR decision making. Sure, there's no-brainer yes, no-brainer let's go IFR (say, climbing through a low marine layer into clear and 1e6), and there's obvious no-go weather (say, Hurricane Andrew). The point at which yes and no converges is where things become more complex. Morris |
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